title: The laboratory environment: 1990-2000.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002568:Certification; D019411:Clinical Laboratory Techniques / Q000639:trends; D005102:Health Expenditures / Q000639:trends; D006280:Health Workforce / Q000639:trends*; D006801:Humans; D013677:Medical Laboratory Science / Q000193:education / Q000639:trends*; D008875:Middle Aged; D014481:United States